Home / 745,041.28-1,028,178.93-527,638.90

Finding the Fourth Proportional to 745,041.28, 1,028,178.93 and 527,638.90

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Solution

The fourth proportional to 745,041.28, 1,028,178.93 and 527,638.90 is: 728,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,041.28 : 1,028,178.93 = 527,638.90 : x
  2. Step 2: Convert to fraction form
    745,041.28/1,028,178.93 = 527,638.90/x
  3. Step 3: Cross multiply
    745,041.28x = 1,028,178.93 × 527,638.90
  4. Step 4: Simplify right side
    745,041.28x = 542,507,194,487.48
  5. Step 5: Solve for x
    x = 542,507,194,487.48/745,041.28
  6. Step 6: Final answer
    x = 728,157.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.